BUG_ON() is replaced with WARN_ON at ion_page_pool.c
Fixes the following issue:
Avoid crashing the kernel - try using WARN_ON & recovery code ratherthan BUG() or BUG_ON().
Signed-off-by: Tomer Samara <tomersamara98@xxxxxxxxx>
---
drivers/staging/android/ion/ion_page_pool.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/android/ion/ion_page_pool.c b/drivers/staging/android/ion/ion_page_pool.c
index 0198b886d906..4acc0eebf781 100644
--- a/drivers/staging/android/ion/ion_page_pool.c
+++ b/drivers/staging/android/ion/ion_page_pool.c
@@ -46,11 +46,13 @@ static struct page *ion_page_pool_remove(struct ion_page_pool *pool, bool high)
struct page *page;
if (high) {
- BUG_ON(!pool->high_count);
+ if (WARN_ON(!pool->high_count))
+ return NULL:
page = list_first_entry(&pool->high_items, struct page, lru);
pool->high_count--;
} else {
- BUG_ON(!pool->low_count);
+ if (WARN_ON(!pool->low_count))
+ return NULL;
page = list_first_entry(&pool->low_items, struct page, lru);
pool->low_count--;
}
@@ -65,7 +67,8 @@ struct page *ion_page_pool_alloc(struct ion_page_pool *pool)
{
struct page *page = NULL;
- BUG_ON(!pool);
+ if (WARN_ON(!pool))
+ return NULL;
mutex_lock(&pool->mutex);
if (pool->high_count)
@@ -82,7 +85,8 @@ struct page *ion_page_pool_alloc(struct ion_page_pool *pool)
void ion_page_pool_free(struct ion_page_pool *pool, struct page *page)
{
- BUG_ON(pool->order != compound_order(page));
+ if (WARN_ON(pool->order != compound_order(page)))
+ return;
ion_page_pool_add(pool, page);
}
--
2.25.1
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